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发明名称
Perfectionnements aux cheminées
摘要
申请公布号
FR970934(A)
申请公布日期
1951.01.10
申请号
FRD970934
申请日期
1948.08.30
申请人
发明人
LUFT GEORGES
分类号
E04F17/02;F23L17/02
主分类号
E04F17/02
代理机构
代理人
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